Making metal-rolling dies



(No Model.) 3 SheetsSheet 1.

G. P. SIMONDS. MAKING METAL ROLLING DIES.

No; 352,367. Patented Nov. 9, 1886.

(No Model.) 3 Sheets-Sheet 2.

G; P.. SIMONDS.

MAKING METAL ROLLING DIES.

No. 352,367. Patented Nov. 9, 1886.

(No Model.) I I 3 Sheets-Sheet 3.

G P. SIMONDS.

MAKING METAL ROLLING DIES.

N9. 352,367. Patented Nov. 9,1886.

N. PETERS. Pnmuum mr. Washin ggggg c UNITE TATES' ATENT Erica.

MAKING METAL-ROLLING DIES.

SPECIFICATION forming part of Letters Patent No. 352,367, dated November9, 1886.

Application filed April P, 1886. Serial No. 198,257.

.To all whom it may concern.-

Be it known that I, GEORGE F. SIMoNDs, of Fitchburg, \Vorcester county,Massachusetts, have invented a new and Improved Method of Making Diesfor Making Rolled Forgings; and I hereby declare the following to be afull, clear, and exact description ofthe same, reference being had tothe accompanying drawings, making part of thisspecification, in which-Figure 1 is a perspective view of the die after the first step ofmanufacture. Fig. 2 is a perspective view during the second step. Fig. 3illustratesthe die during the third step, and .the character of thecutting-tool applied. Fig. 4 illustrates the die completed. Fig. 5illustrates a modification of a completed die wherein the working-facesare sectional and the idle portion of the face entirely removed.

My invention relates to dies to be used in the forging-machine uponwhich a patent was issued to me on June 9,1885, No. 319,752, and has forits object to provide a cheap yet perfect way of constructing said dies.

To this end myinvention consists in anovel method of forming thediefaces, by first cuttingthe face of the die in the configuration ofmore or less of the cross-sectional area of the article to be formed tomake a shaping and finishing surface, then cutting the side walls of thedie on diagonal lines to the horizontal and vertical planes of the dieto form spreading and reducing surfaces, and finally removing thesurplus metal or idle-face portions of the die, to prevent unnecessaryfriction.

In order that those skilled in the art may "make and use my invention, Iwill proceed to describe the manner in which I have carried it out.

For purposes of illustration in this specification I have selected a diedesigned to roll aconical steel shot; but whatever the variation of theface of the die may be the method of making is the same. The entireshape is given to the die by means of a planer.

I first take the steel plate A from which the die is to be made andafter dressing otf the bottoin and sides plane throughout its length ashape conforming to one-half of the article to be forged, thereby makinga form, a b c d, constituting the shaping and finishing surface (N0model.)

at such an angle to the bed of the planer as to give the required angleto the reducing and spreading surfaces of the die. I then locate the dieat such an angle to the planer-bedthat in its passage the tool shallremove the metal from the point ac to the central point, 0, of theforming-surface at one end and the outer point, I), of theforming-surface at the other end of the die, the depth of the out beingsuch as to make the distance between the blank-supporting surface 1'.and the corresponding surface on the opposite die-face a trifle morethan the size of the bar to be forged. After the foregoing step thereremains in the walls of the die outside of its interior working-lines aquantity of surplus metal, id1eface, not necessary to successfulforging, and calculated to produce frictional distortion of the work.Toremove this I place the cutting-edge of a tool, 9, at an angle nearera perpendicular than the angle of the reducing and spreading surfaces,as seen in Fig. 3, and locate the die on the planerbed, so that thesurplus metal may be cutaway, leaving the reducing and spreading surfaceat such a width as to best facilitate its practical Working. Thereducing and spreading surface on the other side of the die is broughtto shape, and the surplus metal removed in the same manner.

It is evident in the working of these dies that when the forming-surfacehas completed its work at any given point said forming-surface from thatpoint to the finishing end of the die is unnecessary and at timesobjectionable, in that it causes unnecessary friction, and I avoid thisby removing within the interior lines of the die those portions of theformingsurfaces between the terminal end of the die and the point wherethe forming-surface has completed its work. This is done by cutting suchidle face in proper lines diagonal to a horizontal plane, andisparticularly well illustrated in the modification shown in Fig. 5, whereI have illustrated adie made in sections A A to A A A. In this instancethe work near the base of the shot (its greatest diameter) is completedsubstantially by the time the die has passed the work as far as sectionsA ICO and A and from this point to the finishing face corresponding toand the converse of the end of the die the surplus metal is cut awaycross-sectional form of the article to be pro-- or gradually diverging,as seen at n n, and the duced, forming the spreading and reducingcompleted portions of the work do not add to surfaces by a cut diagonalto both planes of I 5' \5 the friction of the passing dies. the blankand finally removing the surplus Having thus described my invention,what metal, or idle-face portions, substantially as I claim as new, anddesire to secure by'Letters set forth.

Patent, is c GEO. F. SIMONDS.

The method herein described for making dies WVitnesses: I 10 for makingrolled forgings, consisting, essen G. E. DOWNE,

tially,-i11 first forming in the die-blank a sur- H.-S. DOWNE.

